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本文分析了振铃检测、DTMF编解码和电力线载波的原理及实现方案。对家用电器控制、防盗报警及信息反馈的提出了解决方法,并设计出了硬件电路。该方案安装无需布线,具有语音提示功能,便于家庭安装和操作。
This paper analyzes the principle and implementation of ringing detection, DTMF codec and power line carrier. On the appliance control, burglar alarm and information feedback proposed solution, and designed a hardware circuit. The program installation without wiring, with voice prompts, easy for home installation and operation.